Improvement in stone pbessers



2 Sheets-Sheet 1.

B. S. HUNT. STONE DRESSER.

m: NORRIS PETERS cc.. FHGTO-LITHQ, \VASHINGTON u. c.

2 Sheets-Sheet 2.

B. S. HUNT.

STONE DRESSER.

No. 61,609. Patented Jan. 8, 1867,

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THE Noflms PETERS co. Moro-urns \VAQD-HNGTON, o c

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B. S. HUNT, OF 'PHI'LA'DE LP-HIA, PENNSYLVANIA.

Letters Patent'No. 6l,009, dated January 8, 1867.

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TO ALL WHOM IT MAY concerns:

Be it known that L3. S. HUN'n-of the city of Philadelphia, in the county of I Philadelphia, in the State of Pennsylvania, have invented a new and useful v-Improvement'in Stone Dressers and I do hereby declare that the following isa full and exaet description of my inveption,. 'reference being had to the accompanying drawings, making a part of this specification, and in which- I Rl'ate 1, Figure 1, represents an elevationof my stone dresser, showing. the inside arrangement of "the hammer, springs, and hammer-lifter, &.c., and the outside gearing arrangement on one side. 7

Plate '1, figure-2. represents a front sectional elevation of my stone dresser, showing a front view of the hammer, and'the gearing on bothsides. I I

Plate 1, Figure 3', rep.resents an outside elevation; of my stone dresser, showing'the gearing on said side.

Plate 2,'Figure 1, represents a plan top View of; my stone dresser, showing the, inside arrangement and relative positions of gearings and shafts, Etc.

' P1ate'2, Figure 2, represents a front riewof the hammer with the blade-holder fixed in a perpendicular' position tothe plane of the said hammer, I

Plate 2, Figure 3, represents a top riew. ofthe hammer, showing another relative position of the blade-holder;

Plate 2, Figure 4, represents an .nn'der view of my hammer with the blade-holder in anotherrelative position.

i 'lh'e'nature of my invention consists in bpi ldingiamachine so contrived that, by means of its entirely mechanical action, any stoneof any size or nature can be dressed with economy, both in time and labor.

To; enable'vthers skilled in the art to make and many invention,'I will now proceed todescrihe its const'r'uctio'fi and operation.

In' the drawings, part of this specification, similar letters refer to similarparts.

I construct a rectangular (wooden or metallic) box or frame, B, ha ving neither bottom or cover. Inside said frame B, and toward the middle of about the thirdoi' the length of frame, are set two upright pieces, S S, which, as sectionally shown in figs. 3' and 4, plate 2, bear a groov'e, ate 01, cut lengthwisepntheir centre, and into which will set and slide the guiding-earsor lugs o of th e hammer, hereinafter described: :On the top of both pieces S S, and by means of bolts M M, is 'setfcross-piece N N throughthe centre of which is bored a. hole, into which will pass the handle of .the hammer. The hammer HR is composed, in one solid piece, of hammer H, ears 0, and rod or handle It, thejwhole shaped as shown more particularly'in figs. 1 and 2, plate 1. ,A circular aperture, :2: 2: y, is made through hamm'er H for the purpose-hereinafter explained. Ears o are sized and shaped.

sons to'fit in and slide easy into groovesa b c d. The cutter or blade-holder 0-0 is composed of right-angiilar metallic piece a.- a', and piece I) b, and blades 2 "2 2, made out of steel or any othersuitable metal, the wholeset and held together by means ofbolts d d, as particularly shown' in figs, 2; 3, and 4, plate2, andfigs- 1 and 2, plate 1. On the middle or centre of the top of pieced a" starts-up bolt R", which passesthrough a hole bored into the centre of sole of hammer; H, and fru t R, :findingits place on topof said s'ole under the circularspac e z w 'y, is set on bolt R, and secures in proper position the cutter to-the hammer Being thus completed, the hammer is placed in the box so as to have earsofitting into grooves a b c d, and the handle-rod R running upwards throughmetallic pieces M 0 Z," and spring .S P, the purpose and place of which pieces to be hereinafter explained and described, and clear throughcross-piece N. Annular piece or washer Z is next secured on rod R by means of holt A, so as to maintain metallic spring S Pin proper place andst-ifiness. Metallic piece M O, shaped as shown in elevation, fig. 1-, plate'l, and in plan, fig. 1, plate 2, has its small or fore end set in and.

secure dto shaft S M, which is itself set against and parallel "to the front side (inside) of frame B, held there in. proper' place by upright bearings or journals, J, into which S must revolve freely.- vBrit-A, running through piece M0 and centre of rod B, connects them both, so asto enable M O'to act on rodfR as alever, the fulcrum of whieh is on-shaft S M, above described. A spring,.S P, i's-furthermoreseton rod 3, above cross-piece N, and is regulated by :nutM A, its spring, S P, being to regulate the more or less stifiness' of spring P, and

consequently the strength of each stroke of the hammer. Now, to describe the, gearing andits direct on thehammer, I will, inthe hereinafter description, snppose that I face the'end of the machine where the hammer has been placed,'and will, subsequently, call right-hand side. the side shown fig. '1, plate 1, and-left-hand side the one shown in fig. 3, same plate. Three-metallic shafts, AS, A S, A' S'Q-run 'e'lear through both right and left sides of box the l ft f i of, shaft S is keyed, or' otherwise secured, a co -wheeLC G, which gears wi'th and drives cog-wheel Q G, keyed, or otherwise secured, on left end of shaft A S. The said shaft A S bearson its: centre metallic lifter L F, fig.'"1,'plate 1, and fig. 1, plate' 2,-having as many arms as maybe deemed necessary, the length and strength of said arms being so calculated as toalloweaehof them to catch under and lift up in turn piece or lever M 0. Each arm on its upper face is bevelled or made circular on the end, so as to allow piece or. lever M 0 to escape and fall down alternately. crank-handle, 0-H, being set and. keyed, or otherwlsesecured, on left end of shaft'A S, if: I act on said handle in the direction shown by arrow d e, fig. 3, plate 1, cog-wheel C G will'drive shaft A- S and its lifter, which, catchin g lever- M O alternately with all its (thelifters) arms,-will give the h ammer and its cutter a regular up-and-down motion, the stiffness or strength of each strokebeing easily regulated bymeans'of nut M A,'as above explained. The machine being placed npo'nany stone, if the hammer is set in motion ashas been'above described, the part of the stone which it strikes will soon be neatlydressed; I I

as the motienof the hammer is concerned my machine is completed; but to render it as perfect as I couldI had to find some means by which to avoid the trouble of pushing the machine or the stone forward or fbackward as the dressing operation 'might require; I havetherefore rendered my machine locomotive in the following manner: I first. set the front part'of the box on two casters or swivel-wheels of .suflicient strength. Item-om shaft A S I have'set wheels 3 A, B A, on which the hind part of m'ybox, sits. Immediately after wheel-3 A, endear-camshaft, is keyed, or otherwise secured, cog-wheel, C" G", gearing with pinion P G, said pinion being set'fast on centr'e'of cog-wheel C G which s itself 'set on studSG,;,on which it revolves freely. G G gears with smaller cog-wheel C" G", also set on 'a' 'stud, S. G. On the right end of shaft A S" is setan, upright lever, L, and a small pinion, P, .which is keyed, orotherwise' secured, on said shaft,

' consequently dri-ve'n by'saidshaft independent-o'f l'ever It, through which the shaft passes freely. On lower end of lever L, andgearing with pinion P, is a pinion of same size, P", and set on a stud attached to a Lastly,

- on the-hacker inside face of lever L is a small lug'or catch, which has for object to catch into notches N S, cut

into oircular' platejM K, thereby maintaininglever L inclining either forward or backward, or right perpendicular. Now, when lever L is pushed towards the hammer, or forwards, pinion.P- will gear with cog-wheel C G, and

"if handle C His satin motion as shown by arrow d e, pinion P, being thus driven from'right to left, will drive inion P from left to right, cog-wheel C G and pinion P G'fromright to left, cog-wheel C" G" and'shaft H from left to right, and the machine will subsequently back, in the mean-I time the stone dresser or hammer striking. L everL being set in the contrarydirection, viz, pushed and set backwards, would gear pinion Pf into cog-whecl C G", the above-described gearing movement would be reversed, andjth e machine would go forward while the-hammer would strike. -Hi nd-wheels R A, R A' are provided with rims made of India rubber; gutta percha, leather, or any equivalent material, so as to prevent said wheels, in conscquenceof the weight'of the machine, injuring any stone into which it might-be set in motion. It, will easily-be seen that the machinecan be run both ways, either on the top of the stone to be dressed, or the stone passingunder the machine between the wheels. Fig. 2, plate-1, and figs. .2, 3, and 4, plate 2, show that the cutter can be 'setinto any position to suit the taste of the operator or the requirements of the work to'be done. It is also easily seen that the number of blades to be used in the cutter is'entirely optional,- and can be indicated only by the teachings of practical experiments. Nor do I want to limit myself to using blades only, but Ido reserve to construct my cutter with points or plates of blades of any shape, as the case or work may require:

Having thus'described my'invention, what I' claim as my invention, and desire to secure by Letters Patent I of the United States, i s

1. The-hammerH R, audits-cutter .c c, constructed and combined with leverM O, lifter L F, ands'prings" I S P. and S P, regulating nut M A, so as to obtain the intended and herein-described effect.

' -2. Lever L, pinions P and P, with gearing jand'nngearing movement, plate N S'with' notches,'and lug N S, N S, when combined and constructed in-th'e manner and for the purpose above described 'and set forth.

, 3. Wheels B A and Bf A", provided with a rim made of India rubber, gu'ttapercha, leather, or any ecp iival'ent substance, when combined and constructed in the manner and for the purposenbove described'and set forth.

' B. s. HUNT.

Witixessesi t o Ssm'uir. L. 'TAYLon,

Cunnnns H. Evans. 

